202102493 has 2 divisors, whose sum is σ = 202102494. Its totient is φ = 202102492.

The previous prime is 202102457. The next prime is 202102499. The reversal of 202102493 is 394201202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137428729 + 64673764 = 11723^2 + 8042^2 .

It is a cyclic number.

It is not a de Polignac number, because 202102493 - 2⁶ = 202102429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202102499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101051246 + 101051247.

It is an arithmetic number, because the mean of its divisors is an integer number (101051247).

Almost surely, 2^202102493 is an apocalyptic number.

It is an amenable number.

202102493 is a deficient number, since it is larger than the sum of its proper divisors (1).

202102493 is an equidigital number, since it uses as much as digits as its factorization.

202102493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 202102493 is about 14216.2756374516. The cubic root of 202102493 is about 586.8456507019.

Adding to 202102493 its reverse (394201202), we get a palindrome (596303695).

The spelling of 202102493 in words is "two hundred two million, one hundred two thousand, four hundred ninety-three".